Obion County, Tennessee

Obion County
Obion County Courthouse
Location within the U.S. state of Tennessee
Tennessee's location within the U.S.
Coordinates: 36°22′N 89°09′W / 36.36°N 89.15°W / 36.36; -89.15
Country United States
State Tennessee
Founded1824
Named afterObion River
SeatUnion City
Largest cityUnion City
Government
  MayorSteve Carr
Area
  Total
556 sq mi (1,440 km2)
  Land545 sq mi (1,410 km2)
  Water11 sq mi (30 km2)  1.9%
Population
 (2020)
  Total
30,787
  Density58/sq mi (22/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district8th
Websitewww.obioncountytn.gov

Obion County is a county located in the northwest corner of the U.S. state of Tennessee. As of the 2020 census, the population was 30,787. The county seat is Union City. The county was formed in 1823 and organized in 1824. It was named after the Obion River.

Obion County is part of the Union City, TN–KY Micropolitan Statistical Area, which is also included in the Martin–Union City, TN Combined Statistical Area.